Comment on Increased mortality is predicted of Inachis io larvae caused by Bt-maize pollen in European farmland, Ecological Modelling, 2013

In this comment, we analyze the mathematical model by Holst et al that estimates the increased mortality of Inachis io larvae caused by Bt-maize pollen in European farmaland. In particular, we focus our attention on the part of Holst et al's work that models the Bt-maize pollen loss on plant leaves by a differential equation. We provide the exact solution of the differential equation, showing that the behaviour of the solution, when the time goes to infinity, is different from what claimed in Holst et al's work.